Centrifugal machine.



No. 774,821. PATENTED NOV. 15, 1904.

J. J. BERRIGAN.

GENTRIFUGAL MACHINE.

APPLIUATION FILED FEB. 11, 1904.

NU MODEL.

- WITNESSES: I mvsmqn /Z/mflm W- BY a Patented November 15, 1904.

PATENT OFFICE.

JOHN JOSEPH BERRIGAN, OF EAST ORANGE, NEW

.FRANOIS J. AREND, OF NEIV STOOKHOLM, SWEDEN.

CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 774,821, dated November15, 1904. Application filed February 11, 1904. Serial No. 193,148. (Nomodel.)

To all whom it may concern.-

Be it known that I, JOHN J OSEPH BERRIGAN, of East Orange, Essex county,New Jersey, have invented a new and useful Improvement in CentrifugalMachines, of which the following is a specification.

In United States Letters Patent No. 677, 926, dated July 9, 1901, I haveset forth a machine for effecting by the action of centrifugal force theseparation of solids and liquids, and I have broadly claimed therein areceptacle for' the combined constituents to be separated constructed torotate on an eccentric axis. In my said machine there is also presentmeans for conveying the solid constituent deposited centrifugally on aportion of the interior of said receptacle from its place of deposit toan outlet-opening, whence it is ejected. In the embodiment of my saidmachine as shown in the aforesaid patent the eccentrically-placedreceptacle is arranged in a larger inclosing bowl, partly in which andpartly in the receptacle the liquid-ring is formed, so that said bowlrotating about its center of figure serves both as a containing vesselfor the eccentric receptacle and, in conjunction with the liquid-ringtherein, as a means of balancing the same. I have now discovered that Ican do away wholly with the interior eccentric receptacle, and byaccumulation of solid material in the bowl I can produce therein aneccentrically-disposed chamber or compartment which will perform thesame function as does the actual receptacle which has hitherto beenplaced in the bowl.

My invention therefore consists in a centrifugal machine for theseparation of solids and liquids having a single bowl or drum rotatingona central axis and so constructed as that by the deposition of materialtherein an eccentric separating-chamber will be formed.

In the accompanying drawings, Figure 1 is a vertical section of mymachine on the line 1 1 of Fig. 2 the lower portion of the supportingstandard and driving gear being omitted. Fig. 2 is a horizontal sectionon the line 2 2 of Fig. 1.

Similar characters of referenceindicate like parts.

3 is the rotary bowl, which is supported on the hollow shaft 4, whichshaft is rotated by any suitable means. The outer edge of the bowl 3 isthreaded to receive the flanged cover 5. Centrally disposed in saidcover is a plug 6, which receives'the feed-pipe 7 Secured to the underside of the cover is a box 8, one side of which, 9, is open. Extendingthrough the hollow shaft 4. is a shaft 10, also rotated by any suitablemeans, which by means of the gearing 11 rotates theeccentrically-disposed shaft 12. One end of said shaft is stepped in thebottom of the bowl 3. The other end, reduced in diameter, passes throughan opening in the bottom of the box 8 and within said box carriesradially-disposed arms 13.

The shaft 12 has extending from it a number of arms 14 of equal length,each one of which at its extremity carries a scrapingblade 15. Thedistance of the outer edge of each scraping-blade from the axis of theshaft 12 is such that the scraping-blades 15 will closely approximatethat portion of the inner periphery of the bowl 3 which is leasteccentrio with reference to the axis of the shaft 12. Directly oppositethis least-eccentric portion and formed in the wall of the bowl 3 is anoutlet-opening 16, and within the bowl on each side of thisoutlet-openingare vertical bars 17, which extend from the bottom of thebowl to the cover. The width of these bars 17 measured radially is suchthat the scraper-blades 15 during their rotation will move in proximityto the inner faces of said bars.

In the bottomof the bowl 3 and near the wall thereof is a pipe 18 forthe escape of liquid.

The operation of the device is as follows: The combined materials to beseparated entering at pipe 7 pass into the box 8 and by the action ofcentrifugal force of rotation and of the arms 13 are projected outwardlythrough the open end 9 of the box and against the inner wall of the bowl3, over asection thereof adjacent to one of the bars 17 The solid ma-JERSEY, ASSIGNOR TO 7 YORK, N. Y., AND JOHN BERNSTROM, OF

terial deposits on the wall until it attains a thickness which brings itwithin the circular sweep of the revolving scrapers 15. These then moldthe inner surface of the deposited mass 6 and at the same time carry thenew material around the bowl to meet the opposite bar 17, beside whichit forms another deposit, 0, similar to 7). By reason of these depositsb 0 there is formed an inner cylindrical chamber 19, concentric with theshaft 12, but eccentric to the axis of rotation of the bowl The materialentering after the chamber is formed is separated as follows: A liquid-ring is produced the inner boundary of which (indicated by thecircle 20) extends to the liquidoutlet 18 and also in part lies betweentheinner surface of the accumulated depositsb 0 and the inner peripheryof bowl 3. The uncovered surfaces (Z a and f g of the deposits 6 0 willthen be substantially dry, so that as the scrapers 15 engage the solidingredient and transport it around the bowl they will also carry it overa dry space, as cl 0, before bringing it to the outlet 16, from which itis ejected by centrifugal force, as indicated by the arrow a. Thedeposits 7) 0 remain in place and form substantially a part of themachine as long as desired. Of course if for any reason they are removedthey are re-formed in the manner described before the separating actionof the machine is resumed. The operation of the apparatus is continuousas long as material is supplied, the separated liquid ingredientescaping at 18 and the solid ingredient at 16 in the manner described.

I claim 1. In a centrifugal machine for the separation of solids andliquids, a rotary vessel and means for producing upon the inner surfacethereof and from the solid material a separating-chamber for thecombined materials subsequently introduced therein.

2. In a centrifugal machine for the separation of solids and liquids, arotary vessel and means for centrifugally producing upon the inner surface thereof and from the solid material a separating-chamber for thecombined materials subsequently introduced therein.

3. Ina centrifugal machine for the separation of solids and liquids, arotary vessel having a non-foraminous circumferential wall and means forproducing upon the inner surface thereof and from the solid material aseparating-chamber for the combined materials subsequently introducedtherein.

4c. In a centrifugal machine forthe sepa ration of solids and liquids, arotary vessel and means for producing upon the inner surface thereof andfrom the solid material a separating-chamber for the combined materialssubsequently introduced therein eccentric to the axis of rotation ofsaid vessel.

5. In a centrifugal machine for the separation of solids and liquids, arotary vessel having an escape-outlet for liquid and an escape-outletfor solids, the last-named outlet being in the circumferential wall ofsaid vessel, inwardly-projecting bars on each side of said solid-escapeoutlet, and a conveying device rotary on an axis eccentric to therotation of said vessel and within said vessel and constructed to engagesolid material centrifugally deposited in said vessel; and convey thesame toward said escape-outlet.

6. In a centrifugal machine for the separation of solids and liquids, arotary vessel having an escape-outlet for liquid and an escape-outletfor solids, the last-named outlet being in the circumferential wall ofsaid vessel, inwardly-projecting bars on each side of said solid-escapeoutlet, a rotary shaft eccentrically disposed in said vessel, arms onsaid shaft and scrapers carried by said arms and constructed to engagematerial centrifugally deposited in said vessel.

7. In a centrifugal machine for the separation of solids and liquids, arotary vessel having an outlet for liquid and an outlet for solids, thelast-named outlet being in the circumferential wall of said vessel,inwardly-projecting bars on each side of said solid-escape outlet, meansfor delivering incoming material against the inner periphery of saidvessel adjacent to one of said bars, and means for conveying depositedmaterial around the inner periphery of said vessel.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN JOSEPH BERRIGAN.

Witnesses:

WM. H. SIEGMAN, I. A. VAN WART.

